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Sorting is a fundamental operation in computer science (many programs use it as an intermediate step), and as a result a large number of good sorting algorithms have been developed. Which algorithm is best for a given application depends on—among other factors—the number of items to be sorted, the extent to which the items are already somewhat sorted, possible restrictions on the item values, and the kind of storage device to be used: main memory, disks, or tapes.
There are three reasons to study sorting algorithms. First, sorting algorithms illustrate many creative approaches to problem solving, and these approaches can be applied to solve other problems. Second, sorting algorithms are good for practicing fundamental programming techniques using selection statements, loops, methods, and arrays. Third, sorting algorithms are excellent examples to demonstrate algorithm performance.
However, this paper attempt to compare the practical efficiency of three sorting algorithms – Insertion, Quick and mere Sort using empirical analysis. The result of the experiment shows that insertion sort is a quadratic time sorting algorithm and that it’s more applicable to subarray that is sufficiently small. The merge sort performs better with larger size of input as compared to insertion sort. Quicksort runs the most efficiently.
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